The evident of coupled spin and electron-phonon interactions in Cd2Os2O7 pyrochlore

In this work, we present a study of phonon hardening of 762 cm-1 phonon which is the strongest Raman-active mode in pyrochlore Cd2Os2O7 single crystal through temperature dependent Raman scattering. We discuss that the major contribution of the phonon hardening and the anomarlie behavior of asymmetry Fano parameter would involve to spin-phonon coupling and electronphonon coupling.